When One Observes a Scratch on the Bottom of a Block

question 54

Short Answer

When one observes a scratch on the bottom of a block of clear plastic, the scratch appears to be 2.5 cm below the top surface as viewed from above. The actual thickness of the plastic block is 3.0 cm. The index of refraction of the block is ______________.

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Definitions:

Diluted Earnings

A company's earnings calculated with the assumption that all convertible securities have been converted into common stock.

Preferred Stock

A class of ownership in a corporation that has a higher claim on assets and earnings than common stock, usually with predetermined dividend payments.

Common Stock

A type of equity security that represents ownership in a corporation, with voting rights and potential dividends.

Net Income

The total profit of a company after all expenses, taxes, and costs have been subtracted from total revenue.